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Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
User Handbook
For
GETS Global Signalling L.L.C.
AWL Works Order Q122997
AWL Product Part No. 60-274801
Axell Wireless Limited
Head Office: Aerial House, Asheridge Road, Chesham, Buckinghamshire, HP5 2QD, United Kingdom
Tel: + 44 (0) 1494 777000
Fax: + 44 (0) 1494 777002
info@axellwireless.com
www.axellwireless.com
Axell Wireless Limited
Technical Literature
Document Number 60-274801HBK
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
Page 1 of 16
Table of Contents
1.
Introduction................................................................................................................................ 3
1.1.
Scope and Purpose of Document ........................................................................................ 3
1.2.
Limitation of Liability Notice.................................................................................................. 3
2.
Safety Considerations................................................................................................................ 4
2.1.
Earthing of Equipment ......................................................................................................... 4
2.2.
Electric Shock Hazard.......................................................................................................... 4
2.3.
RF Radiation Hazard ........................................................................................................... 4
2.4.
Lifting and other Health and Safety Recommendations........................................................ 4
2.5.
Chemical Hazard ................................................................................................................. 5
2.6.
Laser Safety ........................................................................................................................ 5
2.7.
Emergency Contact Numbers .............................................................................................. 5
3.
Equipment Overview ................................................................................................................. 6
3.1.
List of Major Sub-Components............................................................................................. 7
3.2.
Specification ........................................................................................................................ 8
3.3.
Circuit Schematic ................................................................................................................. 9
3.4.
Case Front View ................................................................................................................ 10
3.5.
Case Rear View ................................................................................................................. 11
3.6.
Local Alarm Output Schematic........................................................................................... 12
Appendix A........................................................................................................................................ 13
A.1.
Glossary of Terms used in this document .......................................................................... 13
A.2.
Key to Drawing Symbols used in this document................................................................. 14
A.4.
Waste Electrical and Electronic Equipment (WEEE) Notice ............................................... 15
A.5.
Document Amendment Record .......................................................................................... 16
Axell Wireless Limited
Technical Literature
Document Number 60-274801HBK
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
Page 2 of 16
1.
Introduction
1.1.
Scope and Purpose of Document
This handbook is for use solely with the equipment identified by the Axell Wireless Limited (AWL) Part
Number shown on the front page. It is not to be used with any other equipment unless specifically
authorised by AWL. This is a controlled release document and, as such, becomes a part of the Axell
Wireless Total Quality Management System. Alterations and modification may therefore only be
performed by Axell Wireless.
AWL recommends that the installer of this equipment familiarise themselves with the safety and
installation procedures contained within this document before installation commences.
The purpose of this handbook is to provide the user/maintainer with sufficient information to service
and repair the equipment to the level agreed. Maintenance and adjustments to any deeper level must
be performed by AWL, normally at the company’s repair facility in Chesham, England.
This handbook has been prepared in accordance with BS 4884, and AWL’s Quality procedures, which
maintain the company’s registration to BS EN ISO 9001:2000 and to the R&TTE Directive of the
European Parliament. Copies of the relevant certificates and the company Quality Manual can be
supplied on application.
This document fulfils the relevant requirements of Article 6 of the R&TTE Directive.
1.2.
Limitation of Liability Notice
This manual is written for the use of technically competent operators/service persons. No liability is
accepted by AWL for use or misuse of this manual, the information contained therein, or the
consequences of any actions resulting from the use of the said information, including, but not limited
to, descriptive, procedural, typographical, arithmetical, or listing errors.
Furthermore, AWL does not warrant the absolute accuracy of the information contained within this
manual, or its completeness, fitness for purpose, or scope.
AWL has a policy of continuous product development and enhancement, and as such, reserves the
right to amend, alter, update and generally change the contents, appearance and pertinence of this
document without notice.
Unless specified otherwise, all AWL products carry a twelve month warranty from date of shipment.
The warranty is expressly on a return-to-base repair or exchange basis and the warranty cover does
not extend to on-site repair or complete unit exchange.
Axell Wireless Limited
Technical Literature
Document Number 60-274801HBK
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
Page 3 of 16
2.
Safety Considerations
2.1.
Earthing of Equipment
Equipment supplied from the mains must be connected to grounded outlets and earthed
in conformity with appropriate local, national and international electricity supply and
safety regulations.
2.2.
Electric Shock Hazard
The risk of electrical shocks due to faulty mains driven power supplies whilst
potentially ever present in any electrical equipment, would be minimised by adherence
to good installation practice and thorough testing at the following stages:
a)
Original assembly.
b)
Commissioning.
c)
Regular intervals, thereafter.
All test equipment must be in good working order prior to its use. High current power supplies can be
dangerous because of the possibility of substantial arcing. Always switch off during disconnection and
reconnection.
2.3.
RF Radiation Hazard
RF radiation, (especially at UHF frequencies) arising from transmitter outputs
connected to AWL’s equipment, must be considered a safety hazard.
This condition might only occur in the event of cable disconnection, or because a
‘spare’ output has been left un-terminated. Either of these conditions would impair the
system’s efficiency. No investigation should be carried out until all RF power sources have been
removed. This would always be a wise precaution, despite the severe mismatch between the
impedance of an N type connector at 50Ω, and that of free space at 377Ω, which would severely
compromise the efficient radiation of RF power. Radio frequency burns could also be a hazard, if any
RF power carrying components were to be carelessly touched!
Antenna positions should be chosen to comply with requirements (both local & statutory) regarding
exposure of personnel to RF radiation. When connected to an antenna, the unit is capable of
producing RF field strengths, which may exceed guideline safe values especially if used with
antennas having appreciable gain. In this regard the use of directional antennas with backscreens
and a strict site rule that personnel must remain behind the screen while the RF power is on, is
strongly recommended.
Where the equipment is used near power lines or in association with temporary masts not having
lightning protection, the use of a safety earth connected to the case-earthing bolt is strongly advised.
2.4.
Lifting and other Health and Safety Recommendations
Certain items of AWL equipment are heavy and care should be taken when lifting
them by hand. Ensure that a suitable number of personnel, appropriate lifting
apparatus and appropriate personal protective equipment is used especially when
installing Equipment above ground e.g. on a mast or pole and manual handling
precautions relevant to items of the weight of the equipment being worked on must be
observed at all times when handling, installing or dismounting this equipment.
Axell Wireless Limited
Technical Literature
Document Number 60-274801HBK
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
Page 4 of 16
2.5.
Chemical Hazard
Beryllium Oxide, also known as Beryllium Monoxide, or Thermalox™, is sometimes
used in devices within equipment produced by Axell Wireless Ltd. Beryllium oxide dust
can be toxic if inhaled, leading to chronic respiratory problems. It is harmless if
ingested or by contact.
Products that contain beryllium are load terminations (dummy loads) and some power amplifiers.
These products can be identified by a yellow and black “skull and crossbones” danger symbol (shown
above). They are marked as hazardous in line with international regulations, but pose no threat under
normal circumstances. Only if a component containing beryllium oxide has suffered catastrophic
failure, or exploded, will there be any danger of the formation of dust. Any dust that has been created
will be contained within the equipment module as long as the module remains sealed. For this reason,
any module carrying the yellow and black danger sign should not be opened. If the equipment is
suspected of failure, or is at the end of its life-cycle, it must be returned to Axell Wireless Ltd. for
disposal.
To return such equipment, please contact the Operations Support Department, who will give you a
Returned Materials Authorisation (RMA) number. Please quote this number on the packing
documents, and on all correspondence relating to the shipment.
Polytetrafluoroethylene, (P.T.F.E.) and P.T.F.E. Composite Materials
Many modules/components in AWL equipment contain P.T.F.E. as part of the RF insulation barrier.
This material should never be heated to the point where smoke or fumes are evolved. Any person
feeling drowsy after coming into contact with P.T.F.E., especially dust or fumes should seek medical
attention.
2.6.
Laser Safety
General good working practices adapted from
EN60825-2: 2004/ EC 60825-2:2004
Do not stare with unprotected eyes or with any unapproved optical device at the fiber
ends or connector faces or point them at other people, Use only approved filtered or
attenuating viewing aids.
Any single or multiple fiber end or ends found not to be terminated (for example, matched, spliced)
shall be individually or collectively covered when not being worked on. They shall not be readily
visible and sharp ends shall not be exposed.
When using test cords, the optical power source shall be the last connected and the first
disconnected; use only approved methods for cleaning and preparing optical fibers and optical
connectors.
Always keep optical connectors covered to avoid physical damage and do not allow any dirt/foreign
material ingress on the optical connector bulkheads.
The optical fiber jumper cable minimum bend radius is 3cm; bending to a smaller radius may result in
optical cable breakage and excessive transmission losses.
Caution: The FO units are NOT weather proof.
2.7.
Emergency Contact Numbers
The Axell Wireless Network Services Support Desk can be contacted on:
Telephone
+44 (0)1494 777747
Fax.
+44 (0)1494 777002
e-mail
support@axellwireless.com
Axell Wireless Limited
Technical Literature
Document Number 60-274801HBK
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
Page 5 of 16
3.
Equipment Overview
Fiber Optic, Uplink, Band Selective UHF High Band Booster Amplifier Part Number 60-274801 is built
into an 8U, 19” rack mount shelf. The amplifier is used to filter and amplify the signal levels of one
UHF band, 509.5MHz to 510.5MHz; in the Uplink direction only.
The Uplink Optical signal is received from Fiber Optic Transmitter Part Number 60-275101 via Fiber
Optic cable at the FC/APC port labelled “F/O” (annotated “A” in 3.4.); the optical Uplink signal then
enters Fiber Optic RX Module 20-005501 which demodulates the Optical signal to RF.
The RF signal then passes through a Bandpass Filter 02-010801 tuned to pass the Uplink band and
to reject out-of-band noise; after leaving the Bandpass filter the Uplink signal passes through the
Variable Switched Attenuator 10-000701 which can introduce up to 30dB of signal attenuation if
required. The attenuator is controlled by a set of four toggle switches (annotated “E” in section 3.5.)
on the front panel of the Amplifier shelf; each switch is clearly marked with the attenuation it provides,
and the total attenuation in-line is the sum of the values switched in.
After leaving the switched attenuator the Uplink signal passes first through the AGC Attenuator
Module 17-016401 (which is controlled by AGC Detector Module 17-019801 fitted further on in the RF
path) and then through a Low Noise Amplifier 11-007402 which provides 30dB of gain.
The Low Noise Amplifier is followed by a 25W Power Amplifier 12-026902 which provides 37dB of
gain and then the Uplink signal passes through the AGC Detector Module 17-019801 which regulates
the gain level by adjusting AGC Attenuator Module 17-016401.
The AGC Detector Module monitors the RF level being delivered by the power amplifier, and when a
certain threshold is reached it begins to increase the value of the AGC Attenuator Module to limit the
RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided.
After passing through the AGC Detector Module the Uplink path passes through a second Bandpass
Filter 02-010801 to further reject out-of-band noise and then through VSWR Monitor 21-003207.
Upon leaving the VSWR Monitor the Uplink signal exits the Amplifier shelf for the Uplink Antenna
System via the N type port labelled “RF Base” (annotated “F” in section 3.5.).
The Amplifier is powered from mains AC at 110V which drives an internal 400W PSU module
providing 24V DC for the power amplifier; a DC/DC converter provides 12V DC for the remaining
active modules.
The Amplifier has an alarm system; both of the amplifier modules, the PSU, DC/DC converter, the
F/O RX and the VSWR Monitor modules carry their own voltage-free, dry contact alarm relay outputs
which are summed at the 15 way “D” alarm output connector on the rear of the case (annotated “L” in
section 3.5.).
Axell Wireless Limited
Technical Literature
Document Number 60-274801HBK
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
Page 6 of 16
3.1.
List of Major Sub-Components
Component
Part
02-010801
10-000701
11-007402
12-026902
13-003301
17-016401
17-019801
20-001601
20-001602
20-005501
21-003207
96-200045
96-300054
91-520003
Part Description
Bandpass Filter
Variable Switched Attenuator 0-30dB
Low Noise Amplifier 30dB
25W Power Amplifier
Mains Filter Assembly
AGC Attenuator Module
AGC Detector Module
12V Dual Relay Assembly
24V Dual Relay Assembly
Fiber Optic RX Module
VSWR Monitor
DC/DC Converter 24V in/12V out
400W PSU Module
Switchd/Fused Mains Inlet
Axell Wireless Limited
Technical Literature
Document Number 60-274801HBK
Qty Per
Assembly
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
Page 7 of 16
3.2.
Specification
Electrical
Uplink Frequency Range
Bandwidth
Passband Ripple
Uplink Power Amplifier
Uplink PA IP3
Uplink Output Power
No. of F/O ports
Gain
Gain Adjust
VSWR
Impedance
Uplink Noise Figure
AGC
Power Supply
Power Consumption
Environmental/Mechanical
Operating Temperature
Storage Temperature
Cooling
Humidity
Mechanical
Dimensions
Weight
RF Connectors
Battery Back Up
Alarm Interfaces
Axell Wireless Limited
Technical Literature
Document Number 60-274801HBK
409.5MHz to 510.5MHz
1 MHz Typical
± 1.5dB
25W
+63 dBm
+31 dBm/carrier
1 FC/APC
30-60 dB
0-30dB in 1dB Steps
1.5:1
50 Ohms
< 6dB (at maximum gain)
30dB Dynamic Range
220VAC or 110VAC
< 300 Watts
-25°C to 55°C
-30°C to 70°C
Convection
95% RHNC
19” rack, 8U
W483mm x D400mm x H360mm
< 25kg
N-Type Female
N/A
Local
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
Page 8 of 16
Technical Literature
Document Number 60-274801HBK
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
AC Filter
Aerial House
Asheridge Road
Chesham
Buckinghamshire
HP5 2QD United Kingdom
Date: 11/05/2011
© Axell Wireless 2011
AC INPUT
110V
Rx
96-200045
25W
Telephone: +44 (0) 1494 777000
Facsimile: +44 (0) 1494 777002
E-Mail: sales@axellwireless.com
www.axellwireless.com
96-300054
13-003301 400W 17A
20-005501
CD
Axell Wireless Limited
CD
FO
0V
17-016401
20-001602
Relay
20-001601
Relay
30 dB
11-007402
+24 V
4550 mA
37 dB
12-026902
25W
IP3=63
AGC
17-019801
Page 9 of 16
60-274801
Exposition Metro Line
UHF High Band U/L F/O BOOSTER AMPLIFIER
Power LED
+24V
To PA
+12V
10-000701
Bd
409.5MHz to
510.5MHz
UL
409.5MHz to
510.5MHz
VSWR
Monitor
RF Base
5ch@27dBm/ch
Page 1 of 1
A4
Not to Scale
Drawn by: EW
Issue: 3
PSU Alarm Pins 9 & 10
DC/DC Alarm Pins 7 & 8
FO Alarm Pins 5 & 6
Amps Alarm Pins 3 & 4
VSWR Alarm Pins 1 & 2
21-003207
3ch@31dBm/ch
3.3.
Circuit Schematic
3.4.
Case Front View
FC/APC Optical connector “F/O”, UHF H/B Optical U/L I/P from F/O Transmitter, 60-275101
Green LED “POWER”, Fiber Optic RX Power On indicator, illuminated during normal operation
Green LED “ALARM”, Fiber Optic RX Alarm indicator, extinguished during alarm state
Fiber Optic RX RF gain adjustment
Green LED “POWER”, illuminated during normal operation
Red LED “ALARM”, illuminated during alarm condition
Axell Wireless Limited
Technical Literature
Document Number 60-274801HBK
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
Page 10 of 16
3.5.
Case Rear View
RF BASE
0dB
0dB
2dB
ATTENUATOR
ATT-0/30dB-0.25SMA
0dB
0dB
4dB
8dB
16dB
VSWR MONITOR
LOCAL ALARMS
A/C INPUT 110V
FUSE T3.15A
REF.
60-274801
Desc.
U/L Freq:
DATE:
S/N
Variable Switched Attenuator 0-30dB, 10-000701
N type port “RF BASE”, UHF H/B RF U/L O/P to U/L antenna system
AC Input, 110V
AC Input on/off switch
Location of fuse for AC input
15 Way “D” panel plug “LOCAL ALARMS”, volt free, dry contact alarm output.(1)
9 Way “D” panel socket “VSWR MONITOR”, RS232 port for VSWR Monitor configuration (2)
Earthing connection
(1)
See section 3.6. below
(2)
Not user configurable
Axell Wireless Limited
Technical Literature
Document Number 60-274801HBK
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
Page 11 of 16
0V
12V
Axell Wireless Limited
Technical Literature
Document Number 60-274801HBK
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
© AWL 2011
Date: 10 June 2011
N/C
N/C
N/O
N/C
N/O
Aerial House
Asheridge Road
Chesham
Buckinghamshire
HP5 2QD United Kingdom
Telephone: +44 (0) 1494 777000
Facsimile: +44 (0) 1494 777002
E-Mail: info@axellwireless.com
www.axellwireless.com
COM
COM
N/O
N/O
N/O
N/C
COM
12V
12V
A2
0V
12V
12V
20-001601
0V
0V
TO -VE ALARM LED
ON FRONT PANEL
0V
N/O
N/C
COM
24V
A1
VSWR MONITOR
N/O
N/C
COM
N/O
N/C
COM
LA EXPO Uplink Booster Amplifier Shelves
Alarm Wiring Schematic
View on mating face
N/C
N/C
15
COM
COM
N/O
N/O
20-001601
12V
N/C
0V
A2
COM
12V
12V
N/C
0V
12V
24V
A1
0V
POWER AMPLIFIER
COM
15 way “D” panel plug
on front panel
N/O
N/O
20-001601
COM
12V
0V
0V
0V
12V
12V
0V
12V
LOW NOISE/POWER
AMPLIFIER
N/C
FO RECIEVER
COM
From +VE
DC-DC Converter
0V
FROM +VE
POWER SUPPLY
N/O
N/C
COM
N/O
N/C
COM
24V
0V
24V
N/O
N/C
COM
N/O
N/C
COM
PINS 1 & 2
PINS 3 & 4
PINS 5 & 6
PINS 7 & 8
PINS 9 & 10
Page 12 of 16
Page 1 of 1
A3
Issue: 3
Drawn by: PLB/AJS
Not to Scale
VSWR ALARM
AMPLIFIER ALARM
FO ALARM
DC-DC CONVERTOR ALARM
PSU ALARM
ALARM OUTPUTS
VOLT FREE CONTACTS
OPEN=FAIL , CLOSED= GOOD
20-001602
0V
3.6.
Local Alarm Output Schematic
Appendix A
A.1.
Glossary of Terms used in this document
Repeater or
Cell Enhancer
Band Selective
Repeater
Channel Selective
Repeater
AC
AGC
BBU
BDA
BTS
B/W
CEMS
C/NR
Critical Harness
DAS
DC
Downlink (D/L)
DSP
F/O
GND
ID
I/P
LCX
LED
LNA
LPA
Mobile(s)
MOU
MTBF
N/A
N/C (of Relays)
N/O (of Relays)
OFR
OIP3
O/P
P1dB
PA
RF
RHNC
RSA
RX
SDR
S/N
TX
Uplink (U/L)
UPS
VSWR
WDM
Date Format
A Radio Frequency (RF) amplifier which can simultaneously amplify and re-broadcast
Mobile Station (MS) and Base Transceiver Station (BTS) signals.
A Repeater designed for operation on a range of channels within a specified
frequency band.
A Repeater, designed for operation on specified channel(s) within a specified
frequency band. Channel frequencies may be factory set or on-site programmable.
Alternating Current
Automatic Gain Control
Battery Backup Unit
Bi-directional Amplifier
Base Transceiver Station (Base Station)
Bandwidth
Coverage Enhancement Management System
Carrier-to-Noise Ratio
A coaxial cable harness with components of a critical length used to minimise phase
discrepancies when joining signal paths of differing frequencies.
Distributed Antenna System
Direct Current
Signals transmitted from the BTS to the Mobiles
Digital Signal Processing
Fiber Optic
Ground
Identification (Number)
Input
Leaky Coaxial Cable (Leaky Feeder).
Light Emitting Diode
Low Noise Amplifier
Low Power Amplifier
Hand-portable or other “Mobile” RF Transceiver equipment
Master Optical Unit
Mean Time Between Failures
Not Applicable
Normally Closed
Normally Open
On Frequency Repeater
Output Third Order Intercept Point
Output
1dB Compression Point
Power Amplifier
Radio Frequency
Relative Humidity, Non Condensing
Receiver/Splitter Amplifier
Receiver (Received)
Software-Defined Radio
Serial Number
Transmitter (Transmitted)
Signals transmitted from the Mobiles to the BTS
Uninterruptible Power Supply
Voltage Standing Wave Ratio
Wave division multiplex
Date Format used in this document is dd/mm/yyyy
Axell Wireless Limited
Technical Literature
Document Number 60-274801HBK
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
Page 13 of 16
A.2.
Key to Drawing Symbols used in this document
Axell Wireless Limited
Technical Literature
Document Number 60-274801HBK
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
Page 14 of 16
A.4.
Waste Electrical and Electronic Equipment (WEEE) Notice
The Waste Electrical and Electronic Equipment (WEEE) Directive became law in
most EU countries during 2005. The directive applies to the disposal of waste
electrical and electronic equipment within the member states of the European
Union.
As part of the legislation, electrical and electronic equipment will feature the
crossed out wheeled bin symbol (see image at left) on the product or in the
documentation to show that these products must be disposed of in accordance
with the WEEE Directive.
In the European Union, this label indicates that this product should not be disposed of with domestic
or "ordinary" waste. It should be deposited at an appropriate facility to enable recovery and recycling.
Axell Wireless Limited
Technical Literature
Document Number 60-274801HBK
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
Page 15 of 16
A.5.
Issue
No.
Document Amendment Record
Date
08/06/2011
Incorporated
by
AJS
13/06/2011
AJS
Axell Wireless Limited
Technical Literature
Document Number 60-274801HBK
Section
Amended
Reason for new issue
Draft
Issue
Fiber Optic, Uplink, Band Selective,
UHF High Band, Booster Amplifier
Issue No. 2
Date 13/06/2011
Page 16 of 16

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